ASTROSAT CZTI

Data Quality Report

Orbit 57115

Creation date: 2026-04-19T04:06:03.112513
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_083T10_9000006566_57115cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57115cztM0_level2_quad_clean.evt
Size (bytes)566,389,44090,518,400
Size540.2 MB 86.3 MB
Events in quadrant A3,211,779648,817
Events in quadrant B4,189,935639,461
Events in quadrant C7,415,309438,781
Events in quadrant D5,639,059557,142

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144392
B0171402
C0266372
D0213572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65521772.701465%
B65525438.287546%
C6552231035.256410%
D65514306.563883%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7612 6553 83 83 1.09% 1.27%
B 7612 6553 351 351 4.61% 5.36%
C 7612 6553 1881 1881 24.71% 28.70%
D 7611 6552 452 452 5.94% 6.90%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 248 251288 1406.53 717 699 178.2
A 10 251 112567 627.9 717 699 178.2
A 5 113 22054 119.86 717 699 178.2
B 10 16 1065398 7411.75 677 653 143.7
B 5 185 128593 890.6 677 653 143.7
B 4 171 72590 500.76 677 653 143.7
C 15 198 5006687 31911.91 568 561 156.9
C 12 252 53609 338.16 568 561 156.9
C 14 67 45237 284.79 568 561 156.9
D 15 142 2000114 10384.31 671 641 192.5
D 12 33 398477 2066.17 671 641 192.5
D 2 249 279648 1449.03 671 641 192.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter